TM 5-661 Inspection And Preventive Maintenance Services For Water Supply Systems At Fixed Installations, 1945-09-21 CONTENTS SECTION I. GENERAL. Purpose and scope 1 1 Organization of manual 2 1 Equipment classification 3 2 II. RECORD KEEPING. Utilities inspection and service record. 4 3 Record-card 83 rstem 5 6 III. GENERAL PREVENTIVE MAINTENANCE SERVICES. Tools and maintenance supplies 6 7 Lubrication 7 10 Solvents 8 12 Mercury cleaning 9 13 Painting 10 14 Care of functional structures 11 14 Measuring operating temperatures 12 14 Power and water failure 13 15 Equipment under winter conditions 14 15 Removing equipment from service. 15 15 IV. DRIVING EQUIPMENT AND ACCESSORIES. Electric motors 16 16 Gasoline engines 17 17 Belt drives 18 30 Chain drives 19 31 Right-angle gear drives 20 33 Variable-speed drives 21 36 Gear reducers, gear motors, and speed changers 22 36 Ball, roller, sleeve, thrust, and underwater bearings 23 37 Couplings 24 43 Shear pins 25 45 V. WELLS. General 26 46 Straight-bored wells 27 52 Large gravel-wall wells 28 54 Large dug wells 29 55 Rotary wells (straight and underreamed) 30 56 Sand point 31 58 VI. SPRINGS. Maintenance 32 60 VII. INFILTRATION GALLERIES. Maintenance 33 61 VIII. DAMS AND IMPOUNDING RESERVOIRS. General 34 62 Concrete and masonry dams 35 63 Earth- and rock-fill dams 36 63 Impounding reservoirs 37 63 Intakes 38 63 IX. PUMP PERFORMANCE. Efficiency and capacity 39 65 Rotating-shaft packing 40 71 X. WELL PUMPS. Turbine type pumps 41 75 Air-lift type pumps 42 82 Ejector type pumps 43 82 Reciprocating type pumps 44 82 XI. HORIZONTAL AND VERTICAL CENTRIFUGAL PUMPS. General 45 85 Mixed-flow type pumps 46 94 Axial-flow type pumps 47 94 Turbine type pumps 48 94 Scru-peller sludge type pumps 49 94 Chicago sump pumps and bilge pumps 50 96 XII. ROTARY PUMPS. General 51 98 XIII. RECIPROCATING PUMPS. General 52 99 Sludge pumps 53 99 XIV. PUMP AUXILIARIES. Priming systems 54 102 Automatic controls 55 102 XV. BASINS. Settling basins, revolving type concentrators 56 105 Settling basins, conveyor type concentrators 57 108 Baffled mixing chambers 58 110 Mechanical flocculation and mixing basins 59 110 Up-flow sludge contact type basin 60 110 Clear wells 61 111 XVI. CHEMICAL FEEDERS. Gas chlorinators 62 112 Gas ammoniators 63 114 Pump type solution feeders 64 114 Proportional type solution feeders 65 116 Volumetric dry feeders 66 116 Gravimetric belt type dry feeders 67 118 Loss-in-weight type gravimetric feeder 68 119 Continuous lime slakers 69 119 XVII. FILTERS. Pressure filters 70 121 Gravity rapid-sand filters 71 121 Wash- water troughs 72 125 Operating tables or panels 73 126 Gauges and controllers 74 127 Piping and valves 75 129 XVIII. SODIUM ZEOLITE WATER-SOFTENING EQUIPMENT. Softener unit and brine regeneration 76 130 XIX. RECARBONATION EQUIPMENT. Maintenance procedure 77 135 XX. AERATION EQUIPMENT. Spray-nozzle type aerator 78 136 Cascade or step aerators 79 136 Tray and splash-pan aerators 80 136 Diffuser aerators 81 136 XXI. METERING DEVICES AND RECORDERS. Registers, indicators, and recorders 82 138 Venturi tubes 83 138 Orifices and insert type flow nozzles 84 138 Weirs 85 140 Water-level gauges 86 140 Pressure gauges 87 140 Disk, compound, and turbine liquid water meters 88 140 XXII. DISTRIBUTION SYSTEM. Hydrants and mains 89 141 Elevated steel tanks and ground-storage tanks 90 146 Wooden water tanks.- 91 148 Concrete water-storage tanks. 92 148 XXIII. VALVES. Air-relief valves 93 150 Altitude- and pressure-regulating valves 94 150 Cone-plug valves 95 151 Hydraulic-cylinder-operated valves 96 154 Valve-pilot controls 97 154 Gate valves (buried) 98 154 Gate valves (not buried) 199 157 Merco- Nordstrom plug valves 100 159 Check valves 101 161 Globe valves 102 161 Sluice gates 103 163 XXIV. COMMAND AND TECHNICAL INSPECTIONS. Command inspections. 104 164 Technical inspections 105 164

"21 September 1945"--Page [ii]

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